Machine for pressing soles on shoes



Dec. 7, 1937. c. H. PEPIN MACHINE FOR PRESSING SOLES ON SHOES Filed Aug. '5, 1956 4 Sheets-Sheet 1 MAE/vim W) I Dec. 7, 1937.

c. H. PEPIN MACHINE FOR PRESSING SOLES ON SHOES Filed Aug. 5, 1936 4 Sheets-Sheet 2 i Q z 2 m 5 2 v M 5 0 6 4 5 M AWE/Wm Mm)! F y \IIIIIIL;

Dec. 7, 1937. c. H. PEPIN 2,101,189 v MACHINE FOR PRESSING SOLES ON SHOES Filed Aug. 5, 1936 A 4'Sheets-Sheet 3 Fig. 5.

/05 If; /g 3/0 Patented Dec. 7, 1937 UNITED STATES PATENT OFFICE MACHINE FOR PRESSING SOLES N snons Application August 5, 1936, Serial No. 94,403

In Great Britain May 15, 1936 13 Claims.

This invention relates to cement sole attaching and sole laying machines which are provided with means for relatively locating a shoe and sole, and particularly to mechanism for controlling the locating means.

The invention is illustrated as embodied in a machine of the type disclosed in Letters Patent of the United States No. 2,047,185, granted July 14, 1936, upon the application of Ballard et al., which discloses a machine for cement-attaching soles to shoes comprising a plurality of pads which are brought successively to an operating station. Each pad is provided with shoe and sole locating gages which, after a sole is placed upon the pad, are allowed to engage the sole and be- 7 come locked in operative position. A shoe is then placed upon the sole and is located relatively thereto by shoe gages carried by the sole gages. Pressure is then applied to the shoe to force it against the pad by fluid-operated pressure-applying mechanism which causes the shoe to be forced against the sole and depressed somewhat into the pad when the fluid pressure has been fully applied. Under these conditions the I 26 shoe may be brought quite forcibly aga nst the locked gages before the shoe is fully depressed and during the dwell of the shoe under pressure the gages may occasionally indent or otherwise mar the shoe.

An object of this invention is to prevent such marring of the shoe.

Features of the invention consist. in means, acting after sufiicient pressure has been applied to the shoe to insure that the further pressure "applied will not disturb the positions of the shoe and sole relatively to each other, to release the means for holding the gages in engagement with the shoe so that as further pressure is applied to the shoe the gages may be moved outwardly by the shoe and undesired pressure of the shoe against the gages avoided. Preferably release of the gages is effected'by fluid pressureoperated means which, as illustrated, is connected to the same source of fluid pressure as the means which applies pressure to the shoe. plunger mounted in a chamber is exposed at one endto fluid pressure acting to move the plunger in one direction, and-movement of the plunger in- 50. that direction is opposed by spring means so that only after the fluid pressure back of the plunger hasbeen built up to a predetermined pressure sufficient to overcome the spring means does substantial movement of the plunger occur. Movement of the plunger thereafter by the increased As illustrated, a.

pressure acts torelease the lock which holds the gages against the shoe.

These and other aspects and features of the invention will now be described with reference to the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

. Fig. 1 is a front elevation of part of the machine embodying the present invention;

Fig. la is a detail of the pump for producing sole-attaching pressure;

Fig. 2 is a plan view of the forepart of one of the pad boxes with which the machine is equipped showing the gage mechanism;

Fig. 3 is a sectional view of the part shown in Fig.

Fig. 4 is a side elevation, partly in section, showing one of the pad boxes and the mechanism for applying pressure to the shoe;

Fig. 5 is a front view of the mechanism for controlling the operation of the gages including fluid-operated means for releasing the gages;

Fig. 6 is a detail, partly in section, of the fluidoperated means for releasing the gages;

Fig. 7 is a side elevation of part of the mechanism shown in Fig. 5; and a Fig. 8 is a plan view of the mechanism shown in'Fig. 7.

In the drawings my novel mechanism for releasing the gages is disclosed as embodied in a machine of the type fully described in the above- 'mentioned patent. The drawings show those parts of the machine with which my invention is directly concerned and for an explanation of parts of the machine not herein fully described reference may be had to the above-mentioned patent.

In the drawings, the numeral l0 (Fig. 1) indicates part of a turret arranged on a column l2 for rotation about a vertical axis, the turret carrying a plurality of pad boxes, l4, l4, containing pads which are presented in turn at an operating station, at which station the mechanism shown in Fig. l is located. One of the pad boxes I4 is shown more fully in Fig. 4. The pad box contains a yielding pad l6 and upon this pad a sole A is placed preparatory to its being attached to a shoe. For holding the sole and for locating a shoe relatively to it, mechanism shown in Fig. 21s provided. After placing the shoe on. the pad, the operator, by depressing the treadle I8, causes gages 20 toapproach the sole at four points located approximately at opposite ends of the ball line and opposite ends of the tip line. Each of the sole gages 20 is carried by a separate arm,

arms 22, 24 carrying the ball line gages and arms 25, 28 carrying the tip line gages. The arm 22 is pivoted by a horizontal pin 35 to a member 32 which in turn is pivoted on a fixed substantially vertical pin 35 on a frame 35 secured to the pad box I5. The gage arm 28 is pivoted by a horizontal pin 35 to a member 38 also pivoted on the pin 35. Similarly, the gage arm 24 is pivoted by a pin 45 to a member 42 which is pivoted on a fixed pin 44 similar to the pin 34, and the arm 25 is pivoted by a pin 45 to a member 58 also mounted on the pin 45. Each arm is swung about its pivot in a direction to move its gage toward the shoe by a separate spring, the arm 22 being so moved. about its pivot 34 by a spring 55 and the arm 28 being moved by a spring 52 about the same pivot. Springs 54 and 55 act, respectively, on the arms 25 and 26 to swing them toward the shoe about the pivot 45. The gages 20 rest directly upon the pad I5, and the gage arms 22, 24, 2.5 and 28 can swing about their respective pivots 3!], 49, i5, 35 so that the gages 25 may move heightwise of the shoe if necessary, for instance, when the surface of the pad is distorted. The gage 'arms 22, 24, 25 and 23 are moved about their pivots 35, 54 to move the gages 20 away from the sole against the springs 50, 52, 5G, and 55by movement of a rocker 58 (Fig. 3) mounted on a shaft 55. The rocker 58 has four upward projections 62, one for each of the gage arms, these projections engaging rolls 54 mounted one on each of the gage arms in such relation to their pivots 3 M that pressure of the projections upon the rolls dueto counterclockwise movement of the rocker 58 will move all the gages away from the sole simultaneously.

After the gages 25 have been. allowed to engage the edge of the sole they are locked in sole-engaging position. For this purpose portions of the members 32, 38, 42, and 58 which carry the gage arms are arranged to overlap each other and are provided with slots through which a locking bolt 55 (Fig. 3) passes. The bolt 66 is provided at its upper end with a washer 63 and nut III and near its lower end has a notch which is engaged by a tooth I2 formed on a lever I4 pivoted at I6 and urged by a spring I8 in a direction to clamp the members 52, 38, 42 and 45 together and against a part 8i! of the frame 35 which is secured to the pad box. The lever I4 has a roll 82 mounted thereon between its fulcrum i5 and the spring I8 which is engaged by a cam surface on the rocker 58 early in its counterclockwise movement to lift the lever M against the spring I8 and release the locking bolt 66, further movement of the rocker 58 moving the gage arms away from the sole. The rocker 58 (Fig. 3) is connected by a link 84 (Fig. 2) toan upright arm of an angle lever (Fig. 5) pivoted at 88 to the turret, the angle lever having a horizontal arm to be referred to later. The right-hand end of the link 84 carries a pin 92 one end portion of which lies in a slot 95 formed in a member 96 fixed to the frame 35 and the other end of which carries a roll 98 (Fig. 2) which engages a slot formed in the upper portion of the arm 85. It will be seen that when the horizontal arm 95 of the bell crank lever is raised the link 84 will'be pvshed and the rocker 58 swung counterclockwise about its pivot 50 to unlock and open the gages, as above described. A

Spring g. 5) connected between the arm 85 and a pin I52 on the turret It) tends to swing the arm 86 in a clockwise direction and hold a stop screw I54 against a portiom of the turret.

It 1s to be understood-that. 19 Q5. the P boxes I I with which the machine is equipped is provided with a duplicate of the above-described mechanism. When one of the pad boxes approaches the operating station, a roll I06 on the arm 9i! engages a stationary cam I58 and is lifted. to open the gages, and when the roll I65 stops: at the operating station it rests on a ledge IIO (Figs. '1 and 8) forming a continuation of the top surface of the cam I08, the ledge IIU being carried by a lever I I2 pivoted to the cam member I08 at" Hi. The lever IIZ may be depressed by movement of the treadle I8 which pulls downwardly on a rod H6 against a spring IIB, the rod H6 being connected at I20 to the lever H2. A latch I22 (Fig. 5) is provided for locking the lever M2 in depressed position, which latch may be manually released by moving a handle I24 toward the right against a spring I26 and is automatically released when the turret rotates by engagement of a roll I28 on the shaft 88 with a projection I30 on the latch I22. Ofcourse, as the treadle I8 moves the ledge I ii! downwardly away from the roll I55 the spring 555 reacts to pull on the link 84 and move the rocking member 58 clockwise, thus permitting all of the gage-closing springs 55, 52, 54, and 56 to close the gages againstthe sole, and finally the spring I8 is allowed to act to lock the gages in position.

v Each gage 25 carries a shoe gage I32, each of these being adjustable by means of a handle I34 relatively to the corresponding sole gage 20 as explained in the above-mentioned patent.

The operator, after laying the sole A having activated cement upon its marginal portion upon the pad I6, will operate the treadle I3 to permit the gages 25 to come in contact with the sole and become locked in position by the mechanism described, and will place a shoe B having cement upon the overlasted portion of its upper upon the sole A with its upper in contact with the four shoe gages I52, the forepart of the shoe being thus located relatively to the sole. Pressure is now applied to the shoe to force it down upon the sole and hold it in that position until the cement has set. For this purpose each pad box I4 is provided with pressure-applying mechanism (Fig. 4) which comprises a cylinder I35 in which is a piston I58 carrying at its upper end a lever l4!) each end of which is disposed under a lever I52 pivoted at I44. One of the'levers I52 carries a block I46 to engage the top of a last and. the other lever I 42 carries atoerest I48 to err-- gage the toe portion of the shoe. It will be seen that by upward movement of the piston I38 due to the introduction of fluid under pressure through a pipe I50 the levers I42 will be operated in a direction to force the shoe down upon the pad I5, and that, if the gages 20, I32 remain locked against the shoe, the shoe as it is depressed into the pad may be forced against the gages, or some of them, in such a manner as to mar or otherwise injure the shoe.

By my invention means is provided to release the. gages and prevent injury to the shoe, this means as illustrated being operated by the fluid. pressure which forces the shoe into engagement with the pad. This means comprises mechanism which is shown in Figs. 6, '7, and 8. A member I52 is bolted at I53 to a bracket I55 secured at !51 to a stationary post I59. At its upper end the member I52 is provided with a cylindrical bore to receive a plunger I54 which has a running fit in the bore. One end of the bore is threaded to receive a supply pipe I56 and. the other end of thebore; is enlarged and threaded to iii receive a. plug ISS throu'gh which a" pin I69 is freely movable. A pipelfizl is connected with the boreso that any fluid, such as oil, which passes the plunger I54may be drained away-and be carried to the tank which'supplies'a pump I63 for producing the pressure. This pump I63 which may beacontinuously driven gear pump is connected between a pipe IE4 (Fig. 1a.) which supplies oil to the pumpand a-pipe Ififi which receives oil from the pump. The pipes I64} I66 are connected by a pipe I63 in which is. a valve I10 (Fig. '7) which, when open,-allows-the oil to be freely circulated by the pump and when closed causes pressure to be produced in the pipe- I56 for operating the piston I38 and the plunger I54, the pipe I55 which supplies the plunger being connected to the pressure pipe IE6 at I72 (Fig. 1). The pipe I66 is also connected through a three position valve I73 'to the pipe I59 which supplies pressure to the piston I35. The valve III] is closed by operation of a treadle I14 depression of which pulls downwardly on a rod I'IG against a spring I18, the rod I16 having a'collar I 80 (Fig. '7) between which and a washer I82 is a spring I B4.- The washer I82 rests on the forked end of a lever I 86 pivoted at I88 and connected at its rear end by a link I95 to a'lever I92 upward movement of which closes the valve III]. The valve I i9 is maintained in open position by a spring I94. As shown in Fig.7, the member I52 in which the plunger I54 is. located is provided with a bifurcated upward extension I96 having ears to which a member I98 is pivoted at 256. The member I98 carries a pin 252 connected by a spring 204 to the'extension I35, which spring tends to turn the member I 98- in a counterclockwise direction and to 'hold a screw 20G threaded through its lower portion in contact with the pin I on which the plunger I54 acts. The mem ber I98 carries a projection 208 which, when one of the pad boxes is located at the operating sta tion, lies immediately under a lever ZIB which is pivoted on the shaft 88 and is fastened by a bolt 2I2 to the arm 98 so that it forms substantially a part of that arm, upward movement of which causes the gages to be released. It will now be seen that when the treadle I14 is depressed to close the valve I15 pressure will be supplied to the piston I32- which is at the operating station and when, due to resistance of the shoe, the pressure has been built up sufiiciently in the pipe I55, the tension of the spring 204 will be overcome and the plunger I54 will be operated, causing the member I98 to be turned about its pivot 20%! and the projection 253 forced against the lever 2| 0,- thereby lifting the lever and the arm 90 sufiiciently to unlock the gages and avoid injurious pressure of the shoe against them as the piston I38 is further operated to apply full pressure to the shoe. It will also be seen that it is necessary to provide only one of the plungers I54 and its attendant mechanism since this mechanism operates in turn on each of the gage mechanisms when it is presented at the operating station. For the spring 204 a spring of such strength will be selected that the pressure behind the plunger I54 can overcome the tension of the spring to operate the projection 208 suiiiciently to unlock the gages only after a predetermined pressure, less than the maximum, has been applied to the shoe, the gages preferably being released after only sufiicient pressure has been applied to insure that there will be no relative shifting of the shoe and sole during the further application of pressure to the shoe.

,To"the treadle I'I I is connected,'as shown; the usual 'mechanism for moving the three-position valve I I3 to inlet position when the treadle is depressed to apply pressure to the what the operating station and to the same treadle is connected the usual mechanism for moving the three-position valve of the pad next to come to the operating station to exhaust position as fully explained in the patent hereinbefore mentioned. This mechanism forms no part of the present inventionand accordingly a detailed description thereof is omitted.

In the following claims the phrase cement sole attaching-'m'achines should be taken as illustrative and as of a scope to include, for example, sole laying machines which are used for the temporary attachment of soles, prelimiharily to the stitching of the soles to the shoes.

Having thus described the invention, what I claim'as new and desire to secure by Letters Patent of the-"United'States is:

1. A machine'for applying pressure to shoe bottoms havingyin combination, a pad arranged to apply pressure to a sole and shoe, means for relatively positioning the sole and shoe on the pad, means for locking the positioning means in operative position, and fluid-pressure-controlled means for releasing said locking means;

2. A'machine for applying pressure to shoe bottoms having, in combination, a pad arranged to apply pressure to a sole and shoe, means for relatively positioning the sole and shoe on the pad, means for locking the positioning means in operative engagement with the sole and shoe after they have positioned them relatively to each other on the pad, and fiuid-pressure-controlled-means for releasing said locking means.

3. In a cement sole attaching machine, the combination of a plurality of pads arranged to be presented in turn at an operating station, gages associated with the pad at the operating station for relatively locating a shoe and sole placed upon the pad, means for locking said gages in operative position, fluid-pressure-operated means for moving the shoe and pad. relatively to each other to press the sole'upon the shoe, and fluid-pressure means operating after a predetermined pressure has been applied to the shoe for releasing the gages.

4. In a cement sole attaching machine, the combination of a plurality of pads arranged to be presented in turn at an operating station, gages associated with the pad at the operating station for relatively locatinga shoe and sole placed upon the pad, means for locking said gages in operative position, fluid-pressure-operated means for moving the shoe and pad relatively to each other to press the sole upon the shoe, and fluidpressure means operating after a predetermined pressure has been applied to the shoe for releasing the gages. I

5. In a machine for cement-attaching soles to shoes, a pad box, a pad mounted in the box, shoe and. sole locating means carried by the box and movable to engage a shoe and sole located on the pad, means for locking the shoe and sole locating means in operative position, means for relatively moving the pad and shoe to press the shoe and sole together, and means operated by the applied pressure and before maximum pressure is reached to unlock the shoe and sole locating means.

6. In a machine for cement-attaching soles to shoes, a pad box, a pad mounted in the box, shoe and sole locating means carried by the box and movable to engage a shoe and sole located on the pad, means for locking the shoe and sole locating means in operative position, means for moving the shoe to press it upon the pad, and means for automatically unlocking the shoe and sole locating means after a part only of said pressure has been applied.

7. In a machine for cement attaching soles to shoes, a pad box, shoe and sole locating gages carried by the pad box and movable to engage a shoe and sole located on the pad, a lock for holding the gages in operative position, and means for releasing the lock, said means acting automatically only after sufficient pressure has been applied to prevent relative slipping of the shoe and sole.

8. In a cement sole attaching machine, the combination of a plurality of pads arranged to be presented in turn at an operating station, means associated with each pad for relatively locating a shoe and sole placed upon the pad, means for locking said locating means in operative position, means for applying pressure to the shoe to force it against the pad, and means operated by the pressure-applying means after a predetermined pressure has been applied to the shoe for releasing the locking means.

9. In a cement sole attaching machine, the combination of a plurality of pad boxes arranged to be presented in turn at an operating station, pads in the boxes, means associated with each pad for relatively locating a shoe and sole placed upon the pad, means on each pad box for locking said locating means in operative position, means for applying pressure to the shoe to force it against the pad, and a single means located at the operating station and operating automatically only after a predetermined pressure has been applied to the shoe for releasing each locking means in turn.

10. In a cement sole attaching machine, the combination of a plurality of pad boxes arranged to be presented in turn at an operating station, pads in the boxes, means carried by each of the pad boxes for relatively locating a shoe and sole placed upon the pad, means for locking said 10- cating means in operative position, means for applying pressure to the shoe to force it against the pad, and means located only at the operating station and operating automatically after a predetermined pressure has been applied to the shoe for releasing the locking means.

11. In a machine for cement-attaching soles to shoes, a pad box, a pad mounted in the box, shoe and sole locating means carried by the box and movable to engage a shoe and sole located on the pad, means for locking the shoe and sole locating means in operative position, fluid operated means for relatively moving the pad and shoe to press the shoe and sole together, and fluid operated means acting during the application of pressure to unlock the shoe and sole locating means.

12. In a cement sole attaching machine, the combination of a plurality of pad boxes arranged to be presented in turn at an operating station, pads in the boxes, means associated with each pad for relatively locating a shoe and sole placed upon the pad, means on each pad box for locking said locating means in operative position, a source of fluid pressure, a piston and cylinder for each pad operated from said source for applying pressure to the shoe to force it against the pad, and a single fluid operated plunger located at the operating station and operated from said source after a predetermined pressure has been applied to the shoe for releasing each locking means in turn.

13. In a cement sole attaching machine, the combination of a plurality of pad boxes arranged to be presented in turn at an operating station, pads in the boxes, gages carried by the boxes for relatively locating a shoe and sole placed upon the pad, means for locking said gages in operative position, a piston and cylinder associated with each pad box for applying pressure to the shoe to force it against the pad, and a cylinder and plunger located only at the operating station and operating after a predetermined pressure has been applied to the piston to release the locking means.

CHARLES H. PEPIN. 

